Royal Pin Donuts in South San Francisco offers a variety of delicious options, from classic old-fashioned donuts to specialty treats like apple fritters and buttermilk glazed donuts. Customers rave about the friendly staff and cozy atmosphere, making it a go-to spot for breakfast or a sweet treat. The Vietnamese Iced Coffee and donuts are highly recommended, with options for different sizes of coffee to pair perfectly with your choice of pastry. While some customers have noted minor issues with orders, overall, Royal Pin Donuts provides a consistent and enjoyable experience. Don't miss out on trying their Baker Dozen Donuts or 1/2 Dozen Regular Donuts for a taste of their fresh-baked goodness.